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	Provedor de dados RChHN (5) Autor ALBERDI,MIREN (5) CORCUERA,LUIS J (4) BRAVO,LEÓN A (3) REYES-DÍAZ,MARJORIE (3) HESS,SUSAN (2) OLIVARES,ERICK (2) ZÚÑIGA,RAFAEL (2) BARRIENTOS,MÓNICA (1) CASTRO-ARÉVALO,MAURICIO (1) GODOY,ROBERTO (1) JARA-RODRÍGUEZ,VALERIA (1) LUSK,CHRISTOPHER H (1) PIPER,FRIDA (1) ROJAS,PAULINA (1) SANHUEZA,CAROLINA (1) VALENZUELA,EDUARDO (1) ZÚÑIGA-FEEST,ALEJANDRA (1) ÁLVAREZ,MARICEL (1) Mais... Palavra-chave Chlorophyll fluorescence (2) Nothofagus dombeyi (2) Photosynthesis (2) Cold acclimation (1) Ectomycorrhizal fungi (1) Lutein (1) Nothofagus (1) Nothofagus nitida (1) Osmotic adjustment (1) Performance of the PS II (1) Photochemical efficiency of PSII (1) Photoprotective pigments (1) Photosynthetic oxygen evolution (1) Proteaceae (1) Reciprocal transplants (1) Seedling growth (1) Températe rainforest (1) Water deficit (1) Xanthophyll cycle (1) Xanthophyíls cycle (1) Mais... Tipo do documento Journal article (5) Ano 2009 (1) 2008 (2) 2007 (1) 2006 (1) País Chile (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Seasonal changes in the photosynthetic performance of two evergreen Nothofagus species in south central Chile RChHN ZÚÑIGA,RAFAEL; ALBERDI,MIREN; REYES-DÍAZ,MARJORIE; OLIVARES,ERICK; HESS,SUSAN; BRAVO,LEÓN A; CORCUERA,LUIS J. The evergreen Nothofagus dombeyi and Nothofagus nitida are important members of the temperate Chilean rainforest. They seldom grow together in nature. Nothofagus nitida is more susceptible to excess light and drought than N. dombeyi. We postulate that the different properties of the photosynthetic apparatus under common garden conditions of these species could explain their contrasting habitat preferences. The two species growing in a common garden in south central Chile were studied. The optimal photochemical efficiency (Fv/Fm) of both species remained within normal values (»0.8) with the exception of a decrease in N. dombeyi at midday in summer, suggesting reversible reduction in photochemical efficiency of photosystem II (PSII). During summer the... Tipo: Journal article Palavras-chave: Chlorophyll fluorescence; Photosynthesis; Nothofagus dombeyi; Nothofagus nitida; Xanthophyll cycle. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000400008 Responses of two températe evergreen Nothofagus species to sudden and gradual waterlogging: relationships with distribution patterns RChHN PIPER,FRIDA; ZÚÑIGA-FEEST,ALEJANDRA; ROJAS,PAULINA; ALBERDI,MIREN; CORCUERA,LUIS J; LUSK,CHRISTOPHER H. The effects of gradual waterlogging on trees have been little studied. The températe evergreens Nothofagus nítida and N. dombeyi are differentially distributed on soil moisture gradients, only the former being common on poorly-drained sites. We compared the relative height growth rate (RGR H) and foliage loss of seedlings subjected experimentally to normal drainage (soil at field capacity), sudden waterlogging and gradual waterlogging for two months to determine which waterlogging regime more accurately predicts interspecific differences in tolerance, as evident from natural distributions. RGR H was similar between species but differed between treatments (normal watering > gradual waterlogging = sudden waterlogging). Sudden waterlogging caused massive... Tipo: Journal article Palavras-chave: Nothofagus; Reciprocal transplants; Seedling growth; Températe rainforest. Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000200008 Photochemical efficiency of PSII and photoprotective pigments in seedlings and adults of two Proteaceae with different shade tolerance from the Chilean temperate rain forest RChHN ALBERDI,MIREN; REYES-DÍAZ,MARJORIE; ZÚÑIGA,RAFAEL; HESS,SUSAN; BRAVO,LEÓN A; CORCUERA,LUIS J. The seasonal variation in energy quenching parameters of photosystem II and photoprotective pigments were studied in seedlings and adults of two Proteaceae: a shade-intolerant species (Embotrium coccineum J.R. et G. Forster) and a shade-tolerant species (Lomatia ferruginea (Cav.) R. Br.). We postúlate that the shade intolerant species favors photochemical energy driven processes (mainly C0(2) assimilation) while the shade tolerant species exhibits higher non-photochemical energy dissipation under unfavorable conditions. Moreover, the shade tolerant species presents lower seasonal variations in these parameters that the shade intolerant species. Differences in energy dissipation should be more evident in seedlings than adults because of their contrasting... Tipo: Journal article Palavras-chave: Chlorophyll fluorescence; Lutein; Photosynthesis; Photoprotective pigments; Xanthophyíls cycle. Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000300006 Effects of low temperature acclimation on photosynthesis in three Chilean Proteaceae RChHN CASTRO-ARÉVALO,MAURICIO; REYES-DÍAZ,MARJORIE; ALBERDI,MIREN; JARA-RODRÍGUEZ,VALERIA; SANHUEZA,CAROLINA; CORCUERA,LUIS J; BRAVO,LEÓN A. Embothrium coccineum, Gevuina avellana, and Lomaría ferruginea grow in habitats contrasting in temperature and light intensity. Embothrium coccineum is a pioneer species that establishes itself in open sites completely exposed to variable sunlight and temperature. Gevuina avellana is usually found in more protected sites. Lomaría ferruginea regenerates under the canopy in sites with low thermal oscillations and high humidity. In order to establish an association of their habitats with functional attributes of each species, we studied their photosynthetic responses to temperature and light intensity. We expected that E. coccineum, which grows at full sun, is able to acclimate much better its photosynthetic apparatus to different temperatures than the shade... Tipo: Journal article Palavras-chave: Proteaceae; Cold acclimation; Photosynthetic oxygen evolution; Photochemical efficiency of PSII. Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000300002 Response to water deficit of Nothofagus dombeyi plants inoculated with a specific (Descolea antárctica Sing) and non-specific (Pisolithus tinctorious (Pers.) Coker & Couch) ectomycorrhizal fungi RChHN ALBERDI,MIREN; ÁLVAREZ,MARICEL; VALENZUELA,EDUARDO; GODOY,ROBERTO; OLIVARES,ERICK; BARRIENTOS,MÓNICA. The influence of the specific Descolea antárctica {Da) and the non-specific Pisolithus tinctorious {Pt) ectomycorrhizal fungi on some physiological leaf parameters of the Chilean evergreen Nothofagus dombeyi subjected to a low soil water potential (-1.6 to -1.9 MPa in a growth chamber for 35 days) and a high water potential (-0.07 to -0.09 MPa, control) was studied. Drought decreased the water status and increased carbohydrates in mycorrhizal and non-mycorrhizal plants, appearing Z)a-mycorrhizal and non mycorrhizal plants better osmotically adjusted (OA= 0.60 MPa and 0.52 MPa, respectively) than ft-mycorrhizal (0.39 MPa). Proline is not involved in the O A of mycorrhizal plants. The inoculation of N. dombeyi with both ectomycorrhizal fungi favored a better... Tipo: Journal article Palavras-chave: Nothofagus dombeyi; Ectomycorrhizal fungi; Water deficit; Osmotic adjustment; Performance of the PS II. Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000400009 Registros recuperados: 5 Primeira ... 1 ... Última

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